Commits on Apr 5, 2012

1. Fixed a NULL pointer dereference bug in zfs_preumount …

   When zpl_fill_super -> zfs_domount fails (e.g. because the dataset
   was destroyed before it could be successfully mounted) the subsequent
   call to zpl_kill_sb -> zfs_preumount would derefence a NULL pointer.
   
   This bug can be reproduced using this shell script:
   
    #!/bin/sh
    (
    while true; do
    	zfs create -o mountpoint=legacz tank/bar
    	zfs destroy tank/bar
    done
    ) &
   
    (
    while true; do
    	mount -t zfs tank/bar /mnt
    	umount /mnt
    done
    ) &

   

   gunnarbeutner committed Apr 5, 2012
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   973ed42 View commit details

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